Year	base year varies by country
1982	14.067877061825085
1983	15.202229013122414
1984	17.37105542296473
1985	17.92589423804666
1986	18.93254788267588
1987	21.15766039263307
1988	23.03138766519824
1989	25.902358226384965
1990	28.736646949766047
1991	32.0849124898863
1992	36.81406449673006
1993	40.32498682365132
1994	43.048224568138195
1995	46.57154707590212
1996	47.62713982256654
1997	48.417843120875446
1998	47.478072095099705
1999	46.912429175930576
2000	46.09339233938654
2001	45.41162317383674
2002	44.804236807263095
2003	44.826885152580964
2004	45.69376582092188
2005	48.23790400451603
2006	51.973902562579696
2007	56.527859371781275
2008	62.221984444411646
2009	62.7957388826954
2010	65.80411659712496
2011	70.73326645581895
2012	75.62866823587167
2013	81.47681287041526
2014	88.59016472926945
2015	92.58917011369398
2016	93.38699687193056
2017	95.39380099880398
2018	98.77355290549573
2019	101.1476782496314
2020	100.8864329420206
2021	100
2022	101.25625432992071
2023	107.86815160973057